Smelting lead sulfid.



UNITED STATES f VImiiflEBl'l OFFICE.

msnm i. Biiis, QF Tiioi, NEW Yoiiii.

' SMELTlNG L No. 816,?73. Speciciitiim of EAD suLFip.

Letters Patent. Patentd Api-i1 3, 1908.

Applicativi fihirM'ay 23,1%95. Bei'iiil Hu. 282.490.

'T0 all wi'wm, if nung (2n/merli.: I Be ity known lint l, Axsnx (i. BE'VTS, ii.,

citizen of the United Status, msiiiiiiggai iu ,f-

Y plie following is ii speciiiwitifiii. y. This invention roiiitiis tu iiiipro'reii ni'ethi i iiietiil matte.

' 262,489, I liiiviy i ascribed ii pi'uciess uf diiul'- fiiiiziiig giiluiiii hy the coiiihiiivd actioiibf' ii'oii iuiii siilii,l`iii'ii1iiig :iii ii'iin-siidiuiii miit" but .in previously iiiiri'yiiig out that, pijiieliiii:V

iinil'in :ill pruvimis prouwscis ui ImiiLSiiieItini" i z5 liiivie invented curtain new mail 'uii'iiiliiii provenienti: in Siiielbing Lend Siilfild, of Which-f foils if dcsuifiirizing h'iiil suiiiii lijf tiie'iictini of a luisa und n. i-,iirlmn i'iiliiciixgiigent in l-Ii The pi'iiiizipiil ulijvn't'fuf my jireseiitliiivn tiiiii is tu prievffiii, the hiss ofriilkiili iiit'iiij the sliig produced.

1n iiily application Glied herewith', Prod asses u siiicltuig lumi siilliii, Sei'iiiVNii sla'gs hiivi. hun pruiluizvil carrying coiiid ahh ii'im.

the slug will iiiii i'iiiisiieiiililv lower iii* inrit Y i than sodium, ii wry rough hut useful iiliiuvlatini: lining imiilcim Llin liiisis Llull. this Na.;

iii the :slag is ifliiii. iii* more iimi giiitiir'thiiii the' Fui). As ii iciriiisiiqluiiicc of my iiiipijiivigimunt iii :whit-nig: thu use: of iillmli iiiiigiii iii the iiliig iiiyeilzigs run low in Fui), live pai' anni@ 'F130 lining iihuut thc upper limit.. 1 liiii'iaY foiiiifitliiit il' ii iiii'iiiii'ii uliiiig is iiiiuiii ilgi'vsii ii. farm which will mit he. iii-ivm; mii, if lim charge :is 5U, iii miiultiiig in imiiihim!'with4 all the iron Viiiiil iilkiili milliiil vries-sunt iii fiiir this du'uhlu siillid iiiiittu iiiiil il :i su'liiiieiitiy- `fiiiiibhi sing is iiiiiicil nl, the piii'iieiitiige' of alkali iii the rusiiiting shi-g muy lie reduei to a. siiiiill liguri. f I "f V Thel slug is not ai very fusilileonebiis it. contains vnot enough imiigvjiut Vthis can ,bg @dri 'y the cliiiigi., ii goud sling to make' son 'iiiiiig abou L thirty-eight, percent. SQ, mi perceiibi ALUM he() iiiii, per cent., N530 three por cunt., Mg() iwi per cunt., Bri() seven por cient. ln ii. slug nl the iihuve description there is simu', ilmili(y whiithur the iniiuiiiit :if Fc() is iis groin, :is une per cont., foi; the iran Iii siilfalliiig luiiil siiilii iitlifii'lii I liiiiil smliimi cmnpiiuiiils I liiivc fuiiiiflltltliiii giveiihy analysis might iii-,present :is susiig t iis alkali iiivtal iillniliijulliiii i with tti iipplythe jdilutioilwith" iilkiilisiiliiil rcpeiiilleil.iiiattiiis. The siiiiiiiiii or .iilkiiliiiietiil viifgriiicmatto heiiigpfijecueriibl, While they sumti, midi mi'iilkiili metal, priidiicng ii heavy ico metal-alkali-rnetol matte, und o slug containingr less thun live per cent, ol' ferrous oxid.

2. The process of recovering lead from compounds coutaininglead und sulfurwhich consists in smellingwitlinniterials contnining iron and :in alkali metal, producing :in ironslkuli'inetul nmtte, und a slagr carrying less than five per cent. of ferrous oxid.

3. The process of recovering;r lead from compounds containing lend and sulfur which conslsts 4in smelting with materiels containinY iron and an alkali nietnl, producing metalalic lead, und iron-alkulimctul matte, and a slag carrying less than five per cent. of ferrous oxi( 4. The process of recovering lead from I.

compounds containingv lend and sulfur which consists in smelting with materials containing iron and sodium, producing metallic lead, and an ironsodium matte, sndcslg Containing less thun two per cent. of ferrous oxid.

5. The process of recovering lead from compounds containing lead and sulfur which consists in smelting with compounds of iron and sodium, carbon, a basic compound of at )east one of the metals iron and sodium, producingr metallic lead, and iron-sodium matte,

and a slug containing less than two per cent. of ferrous oxid.

(i. The process of recoveringt loud from compounds of lead and sulfur which consistsin sxnelting with carbon, basic compounds ol' iron and of sodium, producinpr lnvtnllic lend, I(and an iron-sodium mette, :unl u slug cnntaining less than two per centfof ferrous oxid.

7. 1n the process of recovering lmnl from compounds of lead and sulfur by smclting with compounds of iron :ind :in alkali metal to produce metallic lend and a light metaliron matte, and a. slug containing less thun two )er cent. of ferrous oxid, producing in .the of ferrous oxid, and treatin Y theslag at ai smelting temperature with n dition of sulfur com ounds to form further quantities of alka i-metaliron matte and :i slug containing 'less than two per cent. of ferrous oxid.

In. testimony whereof I have'signed my name to this specification in the presence of two subscribingy witnesses.

i ANSON G. BETTS.

Witnesses: i

MARY BATES PARKS, M. B.' BARNnElL,

rst place a slag with over two per cent. 

